Paper-feed control



March 27, 1928. 1,664,026

F. FARMER PAPER FEED Common Filed July 31, 1926 K v INVENTC R ATTORNEYPatented Mar. 2 7, 1928.

v 1,664,026- UNITED STATES PATENT OFFICE.

FRED FARMER, OF BROOKLYN, NEW YORK, ASSIGNOR TO AMERICAN MACHINE ANDFOUNDRY COMPANY, A CORPORATION OF NEW JERSEY.

PAPER-FEED CONTROL.

Application filed July 31, 1926. Serial No. 126,138.

This invention relates to an improved paper feed control for wrappingmachines.

In a wrapping machine, it is desirable that the paper reel whichsupplies the wrapping material should rotate as easily as possible inorder to prevent undue strain and possible tearage of the strip ofpaper, but should stop moving while the paper is being cut to form anindividual wrapper in order to avoid accumulation of slack materialwhich is liable to feed improperly when a subsequent package is beingwrapped. The main object of the present invention is the production of apaper feed control having these desirable attributes. With this andother objects not specifically mentioned in View, the inventionconsistsin certain constructions and combinations which will be hereinafterfully described and then specifically set forth in the claims hereuntoappended.

In the accompanying drawings, in which like characters of referenceindicate the same or like parts, Fig. 1 is a side elevation, partlybroken away, of a control constructed in accordance with the invention;Fig. 2 is a fragmentary view taken on the line 22in Fig. 1; and Fig. 3'is an end elevation of the structure shown in Fig. 1.

In carrying the invention into effect, there is provided a shaft forsupporting a reel of paper in strip form to be cut into individualwrappers for packages, means for permittin free rotation and axialadjustment of said shaft during paper feeding intervals in order toinsure accurate feeding of the paper, and mechanism for preventing shaftrotation during non-feeding intervals in order to avoid slack materialinterfering With a subsequent feeding operation. These parts may bevaried in construction within the scope of the claims, for the specificstructure selected to illustrate the invention is but one of numerouspossible concrete embodiments of the same. The invention, therefore, isnot to be restricted to the precise details of the structure shown anddescribed.

Referring to the drawings, the roll of paper. marked 4, is mounted onthe reel ends 5 on a shaft 6 which has an annular channel 7 near one ofits ends; and on the other carries a drum 8. Thecha-nneled end of theshaft 6 engages bearing rollers 9 carried by a slide .10 which isslidably mounted between gibs 11 on the frame 12 of the machine. Theslide 10 is ta ped to receive a screw 13 which is shouldered on an endplate 14 of the frame 12, so that by turnin the hand wheel 15 mounted onthe outboar end ofthe screw 13 the slide 10 may be moved axially on theframe 12, thereby givin an axial adjustment to the shaft 6, the r0 lers9 engaging one or the other shoulder of the channel 7, in accordancewith the direction of movement of the slide 10. This enables the machineoperator to easily and accurately adjust the free running strip of paperwhile it is being fed to the wra ping machine, or, in other words,during t e feeding interval.

The drum 8 rests on stationarily mounted rollers 16 supported on studs17 carried by the frame bracket 18, the rollers 16 being held in properrelationship by a spacer 19 clamped .by the bolt 20 to the triangularplate 21 supported by the studs 17 and 22.

On the studs 17 are fulcrumed brake arms 23, to which are fastened brakeshoes 24 having linings 25 fitting the periphery of the drum 8 and beingforced into contact with the same by a coil sprin 26 socketed in theends of the arms 23 an passing through a sleeve 27 attached to the plate21. To each of the brakearms 23 is pivoted, by pins 28, a link 29, theother ends of which are pivoted, by pins 30, to the ends of a lever 31having a centre stud 32 turnable in a bushing 33 fastened to, and pamingthrough, the plate 21. To the end of the stud 32 is fastened an arm 34,on the pin 35 of which is pivoted a connecting rod 36 attached to oneend of a cam lever 37 fulcrumed on the shaft 38 and carrying a. cam bowl39 engaging the cam 40 mounted on a cam shaft 41 of the wrapping machinein connection with which the control is employed.

The rod 36, at the brake operating end, is provided with a. slot 42which permits counter clock-wise movement of the arm 34 withoutaffecting the rod 36. Thus, if it is desired to release the brake forthe purpose of lifting the shaft 6 to mount a fresh reel ofpaper-thereon, the arm 34 is turned up in the slot 42 and is held up bypropping it up with the bar 43 which is loosely pivoted for this purposeat the end of the stud 22. The backward movement of the arm 34 islimited by a. stop 44 attached to the plate 21. The track of the cam 40is so designed that the brakes 25 are released only during working inring 26 holding e drum 8 during ting free rotation and effecting axiallyadjustment of said reel during paper feeding intervals, and mechanismfor preventing shaft rotation d'uring non-feeding intervals,

said means including an annular channel in and near one end of saidshaft, roller bearings working in said channel, distant roller bearingssupporting the other end of said shaft.

2. The combination with a shaft for supporting a reel of paper of meansfor permitting free rotation and effecting axial adjustment of said reelduring paper feeding intervals, and mechanism for preventing shaftrotation during non-feeding intervals, said means including an annularchannel in and near one end of said shaft, roller bearings said channel,distant roller bearings supporting the other end of said shaft, andscrew-actuated means for axially moving said channel bearings.

3. The combination wit a shaft for supporting a reel of paper, of meansfor perjustmentof said reel and effecting axial adduring paper feedingintervals, and mechanism for preventing shaft rotation duringnon-feeding intervals, said mechanism including a drum on said shaft,and a spring-pressed and cam-controlled braking device engaging saiddrum during non-feeding intervals only.

4. The combination with a shaft for supporting areel of paper, of meansfor permitting free rotation and justment of said reel during paperfeeding intervals, and mechanism for preventing mitting free rotationeffecting axial adshaft rotation during non-feeding intervals,

said means including an annular channel in and near one end of saidshaft, roller bearings working in said channel, distant roller bearingssupporting the other end of said shaft, and screw-actuated means foraxially moving said channel bearings, and said mechanism including adrum on said shaft engaging said distant bearings, and a springpressedand cam-controlled braking device engaging said drum during non-feedinginv tervals only.

In testimony whereof, I have signed my name to this specification.

FRED FARMER,

